Date: Sat, 24 Jan 2009 01:46:46 +0000 (UTC) From: Tom Rhodes <trhodes@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r187661 - head/share/man/man7 Message-ID: <200901240146.n0O1kkoZ059726@svn.freebsd.org>
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Author: trhodes Date: Sat Jan 24 01:46:46 2009 New Revision: 187661 URL: http://svn.freebsd.org/changeset/base/187661 Log: Add a comment on kern.ipc.maxpipekva. PR: 105997 Reviewed by: keramida Modified: head/share/man/man7/tuning.7 Modified: head/share/man/man7/tuning.7 ============================================================================== --- head/share/man/man7/tuning.7 Sat Jan 24 01:34:22 2009 (r187660) +++ head/share/man/man7/tuning.7 Sat Jan 24 01:46:46 2009 (r187661) @@ -23,7 +23,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 19, 2007 +.Dd January 23, 2009 .Dt TUNING 7 .Os .Sh NAME @@ -402,6 +402,16 @@ In this document we will only cover the on the system. .Pp The +.Va kern.ipc.maxpipekva +loader tunable is used to set a hard limit on the amount of pageable +address space available. +This value is auto tuned by the system, but may require manual tuning +in a few rare cases. +Increasing this value to a higher setting, such as `25165824' might +improve performance on systems where pageable address space is +quickly exhausted. +.Pp +The .Va kern.ipc.shm_use_phys sysctl defaults to 0 (off) and may be set to 0 (off) or 1 (on). Setting
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